Post hoc power analysis.
The objective of a post hoc review of statistical power is to determine the average power of tests used in a particular field. Because most theories in psychology are not sufficiently advanced to provide an exact prediction of effect size, post hoc reviews invariably calculate the power of a test in...
| Publicado en: | Journal of Applied Psychology Vol. 79; pp. 783 - 786 |
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| Formato: | Artículo |
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American Psychological Association
October 1994
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=512533316&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 512533316 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00219010 JAY jtl: Journal of Applied Psychology issn: 00219010 maglogo: N pubinfo: dt: October 1994 vid: 79 pid: 34 pub: American Psychological Association artinfo: ui: 512533316 10.1037/0021-9010.79.5.783 ppf: 783 ppct: 3 formats: tig: atl: Post hoc power analysis. aug: au: Gillett, Raphael su: Statistical power analysis Effect sizes (Statistics) sug: subj: Statistical power analysis Effect sizes (Statistics) ab: The objective of a post hoc review of statistical power is to determine the average power of tests used in a particular field. Because most theories in psychology are not sufficiently advanced to provide an exact prediction of effect size, post hoc reviews invariably calculate the power of a test in terms of the test's ability to detect the expected effect size as estimated from the data. However, to achieve their stated objective, such reviews should instead compute the expected power of a test over the range of likely effect sizes. That is, current practice commits the statistical error of confusing a function of an expectation with the expectation of a function. In consequence, post hoc power reviews overestimate the average power of statistical tests, often by a substantial margin. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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